Telegraph selector mechanism



P 1952 R. c. KINSMAN ET AL 2,612,555

TELEGRAPH SELECTOR MECHANISM Filed Oct. 17, 1951 3 SheetsSheet 1INVENTORS RUSSELL C. KINSMAN AND THORNE PERRY ATTORNEY Sept. 30, 1952 R.c. KlNS MAN ETA!- TELEGRAPH SELECTOR MECHANISM Filed Oct. 17, 1951 3Sheets-Sheet 2 INVENTORS A Y Y t S MT NP, A

p 1952 R. c. KINSMAN ETAL 2,612,555

TELEGRAPH SELECTOR MECHANISM Filed Oct. 1'7, 1951 3 Sheets-Sheet 3INVENTORS RUSSELL G. KINSMAN 8n THORNE PERRY 5/29: 4' BY MM ATTORNEYPatented Sept. 30, 1952 TELEGRAPH SELECTOR MECHANISM.

Russell 0. Kinsman, Collinsville, and Thorne Perry,"Glastonbury, Cnn.,assignors to Gray Research and Development Company, Inc., a corporationof Connecticut Application October 17, 1951, Serial No. 251,726

19 Claims. 1

' This invention relates to telegraph selector mechanisms forinterpreting a series of timed signal pulses.

Printing telegraph systems, constituting an important application ofthis invention, have long been subject to serious limitationsbecause ofthe complex mechanical linkages employed in the constructionof theirselector mechanisms. Prior art devices for the purpose have required alarge number of operating parts and have been excessively slow andbulky, failing to keep pace with the general progress in the field.

It is foremost among the objects of this invention to provide a selectormechanism which is simple and compact, capable of rapid operation,requiring few parts, and permitting ready servicing in the field. Thesefactors have contributed to a very substantial reduction in cost andmaintenance as compared with devices previously employed for similarfunctions.

The telegraph selectors contemplated herein comprise a frame, anelectromagnet carried by the frame having a radial, preferably annular,

' pole and a winding adapted to be energized by an incoming signal, anarmature providing an abutment rotatable with a shaft or rotor about afirst axis common to said pole and pivoted about a second axistransversely disposed with respect to the first, armature advancingmeans carried by the frame for intermittently shifting the armaturetowards the pole, and a driven member movably carried by the frame in apath traversed by the abutment. The abutment may be rotatable relativeto the pole of the magnet and with the armature it may be biased awayfrom the pole about the second axis. Where a biasing spring is employedintermittent shifting of the armature towards the pole must overcome theforce of sucha spring.

The armature advancing means may assume the form of a' cam for eachdriven member carfied by the frame, and such a cam or cams may be ofannular form. Each driven member may comprise an arm pivotally carriedby the frame and latching means may hold each driven member in certainof its adjusted positions until the completion of a cycle whereupon suchmember may be biased or otherwise restored to an initial or otheradjusted position. A suitable latch re: leasing mechanism may beprovided, and may be carried by the shaft or rotor carrying thearmature. Each driven member canactuate a switch or other desiredinstrumentalitmdepending upon the specific use for which the apparatusis intended.

The armature-carrying shaftor rotor may beconnected with anddisconnected from a driving shaft intermittently, and may be controlledby incoming signals or otherwise.

A more complete understanding of the invention will follow from adetailed description of the accompanying drawings wherein:

Fig. 1 is a somewhat diagrammatic fragmentary perspective view of aselector embodying some of the features of the present invention;

Figs. 2, 3 and 4 are fragmentary perspective views based on Fig.1depicting positions of the elements under various sets of conditionsencountered during operation; and

Fig. 5 is a fragmentary perspective view, also somewhat diagrammatic,depicting a selector embodying additional features of the invention.

The selector mechanism depicted in Figs. 1 to 4 includes a shaft. orrotor ID to which a ring I2 is secured by means of a key M for rotationabout the shaft axis. Between-a pairof radial lugs [6 formed on the ring.there'isreceived a flange l8 of an armature or striker, 2B for relativemovement about the axisof a pivot pin 22 transversely disposed withrespect to the axis of the shaft I0. 'Ihearmature is provided with aface plate 24 of paramagnetic material secured at right angles to theflange l8, and a spring 2% bearing against the lowerportion of the rearsurface of the plate 24 biases the armature clockwise about its pivot toits limiting position shown in Fig. 1. I

An annular selector electromagnet 28 surrounds the shaft H) andcomprises a support 39 for a winding 32 which is energized through apair of conductors 34 by the incoming signal pulses. Where theelectromagnet is rendered rotatable with the shaft l0,the,concluctors 34may assume the form of slip rings and brusheawhereas a fixedelectromagnet can employ conventional leads to constitute the conductors34. It is intended that the force of the electromagnet 28 when energizedwill be insufficient of itself to overcome the bias imposedon thearmature 28, but the force is quite sufiieientto hold the armature in anadjacent position against, the biasing effect. I

In order to present the face plate of the armature to the electromagneta suitable number of times per revolution of 'the s haft Iii, a fixedcam member 36 is supported coaxially about the shaft and'provides thedesired number of camilobes 38 which extend into'the path oflthearmature flange l8. Consequently,ias-theshaft l0 rotates, the flange l0sequentially engages the lobes 38 causing the armature to rockcounterclockwise about the pivot 22 towards the winding 32. If thewinding is energized at such times, the armature will be magneticallyheld for the duration of the signal pulse and then restored by itsbiasing spring 26 to the position shown in Fig. 1.

Also .fixed with respect to the shaft I is a stator frame' 40 havingQaiflange 42 surrounding the electromagnet 28 secured to a flange 44surrounding the shaft I0 by a suitable number of spacing. bars 46.minals 48, 50, and 52 constituting the poles" or a single pole doublethrow switch, there being, such I a group of terminals foreaichcamlobej38. For each such group, the flange .carries a shaft. 54pivotally supported in a journal 54. The shaft 54 carries a switch lever58 having a reduced end 60 projecting into the path followedby the-flange I8 when it is remote from the face of the electromagnet. Aspring 62 is interposed between apin 6 4 andthe lever58 biasing theshaft 54 to the position shown'injFig. J 1,, where the, switchcontactsjBG carried ,byjjthe, shaft, bridgev the terminals 48 and 50..Whenthe. armature' is retained adjacentfthe. electromagnet as depicted,

in Fig.; 2, the. arma ture *fiange I8 will clear the switch lever 60 andtheswit'ch, contacts 66 will continue to,bridge lthe terminals and 50.:But whenythe armature20 assumes its retracted positionunder the forceof the spring 26, its flange 1 I'8 will encounterthesw'itch leveri60 asshown in'jFig.-3. and-move. the upper contact SGfromthe=terminal-50'towards'the terminal 52 until the-movement-is completedas shown in'Fig. 4 where the contacts '66 bridge the'terminals '48 and52. *The shaft ,54Zwill be retained in this position'by a resilientlatch 1 providing a. detent 10 for-engagement with-acam lug 12. At thetermination-of a-cycle,-asupport "for the latch is moved to the rightasviewedinjFig: 4,-releasing the cam 12* and permitting" the spring 62 torestore the shaft and its switch contacts to their initial positionsas'depicted in Fig. 1'.

By the use --of g a onewrevolution clutch in a manner "known in--theart;rotation of the shaft I0 is initiated bythe-*first-pulseof the incomingsignal; and is' terminated-shortly. after the last pulseof the 'signal.

The mechanism 'depictedin Fig. 5 requires no resetting-operation at'theend ofeach revolution to prepare for the'reception of a;succeedingpulse.

The shaft'or rotor-'80'has' securedthereto by means of a pin 82, aclutch driving member 84 which selectively *operates through a 'clutchspring386 to rotate the clutch driven-membenBS.

A collar 90' is secured to the driven-"member 88' 'for rot'ationtherewith. This collar contains a slot92"to receivea lever 94'whichl'ismounted for oscillation about-the axis of a" pivot-pin 96 journalled-in the collar transversely withrespect' to the axis-ofthe-shaft-80. "The lever 94 is secured to an-armature' 98 whichis biasedin acounterclockwise direction; as viewed inFig. 5," about the pivot pin96 by means of aspring I00 interposed between the collar"92- andthe'lever' 94.

The upper-edge of the lever 94 provides; a-pair of projections I02 andI04 spaced by a gap I06,

and the rear or left end of the lever as viewed in the drawing is"formed withrajprojection I08.

annulargelectromagnet 'IIO surrounds 'the shaft 80 andincludes-amagnetimhousing'II2 having" a radial 5 face interrupted by. anannular non-magnetic insert I-I 4:adja cent to the path of the "armature98. Wherei the electromagnet is fixed; to the'shaftfi 0; slip .vrings It6: interconnect 94 to rock.theiarmature-a8'ltowardsi the magnetperiodically, as 'the sha'ftffiii rotates. In the form The flange 42carries a group of ter-"h illustrated, six such lobes are contemplated,one for each character baud and one for a stop baud provided by thesignals supplied-over the line I20. A fixed frame: I26 supports a switcharm I28 forroscillationnabout a pivot I for connectingandl'disoonnectingthe terminals I32 and I34. ".Thes=arm ;containsopposed notches I36 for the Y reception of-thelrounded ends I38 oflevers I and I42 pivotally carried by a pin I 44 supported in the frameI 26. The lower ends I 46 of the levers .I40-and I42 are selectivelyencountered by the projections I02 and I04 respectively, depending uponthe position of the lever 94- which isldetermined asinthe previouscase'bywhethertor not the armature'98 is retained adjacent.xtolfthelalectromagnet or retracted therefrom byl'thebiasing spring I00.'11: Willbe 'clear jthatWherithearmature is presented. to the magnet I:ll 0 to sense..a.si. nal baud, ifv the magnet isenergizeld the armatureis retained adjacent thereto and. ithelprojection I02 will engage'the,lever I40 (providedfthe. lever is' inits lower position); shiftinglthelswi'tc'hlarm 'I 28' to a position: closing the mark contacts. Wherethe 'fma'rk contacts were previously closed (the'lever' I40 being in'itsupper position out of the path of theprojectionj I02) .noJshift of:the switch arm will occur. In casegthe winding H8 is not energized whenthezarmaturevislpresented by a lobeI24 of 'the. cam,-' the projectionI04 will traverse a 'pa'th including the. lower position of the lever I42 to1causelltheswitch ,arm I28 to close the 'space contacts, provided.of course that these contacts are not, already closed.

, Aswill beclearfrom thef0reg01ng,1thereare five such switchingassemblies fdisposed radially about the axis-of theJshaft'BO'aIidsecured to the frame I26.

Alsosupported'by the frame in kasuita'blelmanner, is va shaft "I48carrying. ,aZleverLI501in the 'pathof the rear projectionIUBLofTthearmature lever 94. The lever 150 j islbiase'd .towards" theshaft. by means, of. .a. spring] 52inter-posedbetween an arm" I 54, ofthelever-arid allug' I56.\suitably carried byitheif'frame. "iTheharmi154 termimates in a'detent I581adapted' toieneaiee stop lugs of theone-revolution clutch when the projection I 0 8 i engagesjthe; lever15.0. ';The clutch will ,become v jdisene'fibeieid lu'nderlsuich.-'circumstances and. remain so. until the. winding. Ii 8 isdeener'gize'dj following ,al'stop .baud, .,at which time the armaturewill i .be e retracted by .the spring I00 .andthe lever. 1:50 restoredbyits,.-biasing spring I52,1r'eleasing' the lugslflfifland. 16 I.

.A sorcalled. range. adjustment ,..as ,convem tionally. employed inthisartlis readily. Provided by. angular adjustment of, thebtherwisefixed.por-

tions of. thefframe'to permitlsampling of jthe opti-,

mum portion of. the'signalbaud.

' Inasmuchasvariations such .as: have occurred to theqpresentinventors.will besuggestedto'.those skilled in the art bythe;foregoingfiisclosure, lthe specificformsoftheinventioniillustratedanddescribed should s, not be .construedQin.amlimiting ense beyond the scope of the'appendedclaims. We claim: 1.*A' telegraphselecton comprisingla frame, ..an electromagnet carried bystridfra'me.having-ia ersed by said abutment.

amam

. radial pole and a winding adapted to be ener ized by an incomingsignal, an armature providing; an abutment rotatable about a first axiscommon to said pole and pivotedabout a second raxis transverselydisposedwith respect to thefirst armature advancingmeans carried by saidframefor intermittently shifting said armature towards saidpole and a drivenmember movablyicarried by, said frame in a path traversed bygsaid:abutment. 1.;

2. A telegraph selector comprising a frame, an electromagnet carried bysaidframe having an annularpole and a winding adapted to be energized byan incoming signal, an armature providing an abutment rotatable about afirst axis common .to said pole and pivoted about a second axistransversely disposed with respect to the first, armature advancingmeans carried by said frame for intermittently shifting saidarmature-towards said .pole, and a driven member movably carried by saidframein a path traversed by saidiabutment 3. Atelegraphselectorcomprising a frame, an

electromagnet carried by said frame having a radial pole and a windingadapted to be energized by'an incoming'signal, an armature providing anmon to said pole and pivoted about a second axis transversely disposedwith respect to the first,

said armature being biased away from said pole about said second axis,armature advancing means carried by said frame for intermittentlyshifting said armature towards said pole, and a driven member movablycarried by said frame in a path traversed by said abutment.

5. A telegraph selector comprising aframe, an electromagnet carried bysaid frame "having a radial pole and a'winding'adapted to be energizedby an incoming signal, an armature providing an abutment rotatable abouta first axis common to said pole and pivoted about a second axistransversely disposed with respect to the first, a spring biasing saidarmature away from said pole, armature advancing means carried by saidframe for intermittently shifting said armature towards said pole inopposition to said spring, and a driven member movably carried by saidframe in a path traversed by said abutment.

6. A telegraph selector comprising'a frame, an electromagnet carried bysaid frame having a radial pole and a winding adapted to be energized byan incoming signal, an armature providing an abutment rotatable about afirst axis common to said pole and pivoted about a second axistransversely disposed with respect to the first, a cam carried by saidframe for. intermittently shifting said armature towards said pole, anda driven member movably carried by said frame in a path traversed bysaid abutment.

'l. A telegraph selector comprising a frame, an electromagnet carried bysaid frame having a radial pole and a winding adapted to be energized byan incoming signal, an armature providing an abutment rotatable about afirst axis coment.

mon to said pole and pivoted abouta second axis transversely disposedwith respect to the first, a :'plurality of cam elements carried by saidframe for intermittently, shitting said armature towards saidypole, anda driven member movably carried by said frame in a path traversed bysaid abuttelegraph selector comprising a frame, an

electromagnetcarriedby; said frame having a iradial pole and a winding;adapted to be energized by an incoming signal, an armature providing anabutment, rotatable about afirst axis common to vsaidpole and pivotedabout asecond axis trans- ;versely disposed with respect to the first,an annular-pcam carried by said frame for intermittently shifting saidarmature, towards said pole,

and a; driven, member movably: carried by said framein aHpathtraVersedby said abutment,

, ;9. A telegraph selector comprising-a frame, an electromagnet carriedby said frame having a radial poleand a winding adapted tobe energizedby an incoming signal, an-armatureprovidingan abutment rotatable about afirst axis common to said ,pole, andpivoted about a second axistransversely, disposedwith respect to the first, armature'advancingmeans carried by said frame for intermittently shifting-said armaturetowards said pole,.andgan arm pivotally carried by said in a path travvIably carried byzqsaid, frame by said abutmentsi 1 frame ma 7 pathtraversed, by said. abutment.v

10. A telegraph selector comprising a, frame, an electromagnet carriedby, said frame having a radial poleand a winding adapted to be energizedby an incoming signal, an armature providing an abutment rotatableabout, a. first axis common; to said .pole and pivoted about a secondaxis transversely disposed withqrespect to the first,-a plurality ;ofcams carried by said frame for, intermittently shiftingqsaid armature:towards said-pole, and-ia plurality of driven members movinj,,a-xpathtraversed 11. A telegraph selector comprisinga frame, an

electromagnet carried by said-frame having a radial pole and a windingadapted jtogbe-energized by an incomingsignal, an armature-providing anabutment rotatable about'a' first ,axis common to said pole and pivotedabout a second: axis transversely disposed with respect to,the;first,=an anlarly arranged arms pivotally carried by said nular camhaving a plurality of, lobes carried by sa d frame for intermittentlyshifting said armature towards said pole,= and a plurality ;of annuframein a path traversed by said abutment.

12. A telegraph selector comprising a frame, an electromagnet carried bysaid frame having a radial pole and a winding adapted to be energized byan incoming signal, a shaft rotatably mounted relative to said frame, anarmature providing an abutment rotatable with said shaft about. a firstaxis common to said pole and pivoted about a second axis transverselydisposed with respect to the first, armature advancing means carried bysaid frame for intermittently shifting said armature towards said pole,and a driven member movably carried by said frame in a path traversed bysaid abutment.

13. A telegraph selector comprising a frame,

an electromagnet carried by said frame having aradial pole and a windingadapted to be energized by an incoming signal, a shaft rotatably mountedrelative to said frame, an armature-providing an abutment rotatable withsaid shaft about a first axis common to said pole and pivoted about asecond axis transversely disposed with 'be f-moyabiy carriedbyrsaidflame" I traversed by sai-d 'abutmena and 'a eluteh *for se-'1eoti-vfely' connetfng f saidfshaib withwa driying .zgized i by aninooming: signa v 1 an-armatur providing {an abutment -*rotatable' abouta first laXiS 1 common tosa-id pole and pi'v- "'ie'j siaeotfto'-armattire advancing 5 means am o-o5; s id rram'e iforimenmaenayshirung said armature t'owards s'aid pol, a driven memmember:1 1

14. A telegraph selector comprising a 'frame,

an 'electromagnet carried by said frame having a radiaI: pole and fawinding adapted-Rte enersized" by an inoomin-g signalyan armaturepr'ovidmg an abutment rotatable about a "first: axis common to' *saidpoland -riivo-ted about a second axis transversely disposed "with165136617 5130 the firstg armature advancing :meanscarriemby said flamfor intermittentl y shifting said armature frame forintermittently"shifting saidarmature towards said poie -a driven:membermovablybarrie'd byv said frame in-a path traversed by said abutment,means. biasing said driven-member towards one; position; and T dawningmeans for :holding saididr'iverimiembenimanotherposition;

16-. A -:te1egraph seiectormomprising fr'ame, anselectrom'agntearriedabyi said frame having sarradialpoieand a winding dapted beeneroted about a second axis transversely disposed with respect :toithafirst,-'-"armature-advancing means carriedby :said frame ='-f0rintermittently shifting :said armature towards ---said: pole,- adriven-1 member :movabiycarri ed- {by' said 'trame ima, path traversedbwsaidabutment,j=latehing means f0r1ioIdingsa'iddriven members inoneperiodically: f releasing said dawning means.

417.. A :telegraph selector iwmprising" aeframe,

. an electnomagnec carried by said frame having :8 a; radial pol'e'andla winding adapted-z to be ener- "giz an incoming-signal, an armatureprovidi'ng" 1'1 abutment rotatabie about a first-axis o saidpole andpivoted about a sectransversely disposed with respect to I the firstarmature: advanci-ngg'mealns carried by "sa-i iframe for ;i-ntermittent1y1' shifting "said armature towards: said poie; a driven membermovabiyz carried by said frame in a path traversed by said abutment, anda switch actuated 'by saidldrivenamember. i Y

. 318. AL-telegraph selector. comprising a frame, anxieiztrbmagnt:carried by said :frame having a radiakpoieiand .a windi-ng adapted; to;be venergizedyby -.=ani incoming signal; an armature protrifling-anabutment-rotatable about a first axis oomn1'0n.:to,,said :pole: {andpivoted aaboutxa sec- ,ond transversely; disposed. ;.With.- :respect. to:gfohe: ifirstsanmatnre advancing; means 1 earned by said; frame/afarintermittently sl'ziitingv said "armature towards-said pole, a pluralityQfldriyen members movably carried by said frame in a l zpathitrawersedbmsaidnabutment. and a; plura it '1.ofvswitchesicarried. by saidqframe.actuated y sam dx-"iieenomembers respectively. 4 1A.r.'i;eieg-raphzselector.oomnrisin a fr m an -.e1edtrornagnet carried bysaid :frame havin wadiairpolaanda winding, adapted to be enersized;byanw incoming si nal.- an armature p oviding:aa abutment ;r tatableabout an. ax .luconnnondzo said pole-.andi-movable towards aaway-afromcsiaid 51 .0184 fiITIQQifil-llfi. advanc ng mean carried-bysaid frame .forte zmittentlypshi s ins said armature towards saidipplfl@ndyadrive ememhar movabl'y part ed?bysaidirame in ap traversed};idiabutm nta q i "HORNE V a, CITED- The rfollowing references v are orecord in the fifile.loft this patentz 2:? UNITED rsir "PATENTSNumber-.1; Na Date 1 if p VtS-,--v--.e ---s---"'" 1928 1,800,973 Wus4&6949 1 -L aw M y 24; .1932

V. wary -.50 sisaww Zen o-v-a. N 0 9. 2 21 0.1,: sa m p 2 5

